package com.atguigu.flink.chapter11;

import com.atguigu.flink.bean.WaterSensor;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.streaming.api.datastream.DataStream;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.table.api.Table;
import org.apache.flink.table.api.bridge.java.StreamTableEnvironment;
import org.apache.flink.types.Row;

import static org.apache.flink.table.api.Expressions.$;

public class Flink01_Table_BaseUse {
       public static void main(String[] args) {
               Configuration configuration = new Configuration();
               //web  UI端口
               configuration.setInteger("rest.prot",10000);
               StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment(configuration);
               env.setParallelism(1);

           DataStreamSource<WaterSensor> waterSensorStream =
           env.fromElements(new WaterSensor("sensor_1", 1000L, 10),
                   new WaterSensor("sensor_1", 2000L, 20),
                   new WaterSensor("sensor_2", 3000L, 30),
                   new WaterSensor("sensor_1", 4000L, 40),
                   new WaterSensor("sensor_1", 5000L, 50),
                   new WaterSensor("sensor_2", 6000L, 60));

           // 1. 创建表的执行环境
           StreamTableEnvironment tableEnv = StreamTableEnvironment.create(env);
           // 2. 创建表: 将流转换成动态表. 表的字段名从pojo的属性名自动抽取  ,表的列名默认就是属性名
           Table table = tableEnv.fromDataStream(waterSensorStream);
           // 3. 对动态表进行查询
          /* Table resultTable = table
                   .where("id ='sensor_1'")
                   .select("id,vc");*/

           Table resultTable = table
                  .where($("id").isEqual("sensor_1"))
                   .select($("id"), $("ts"), $("vc"));
           // 4. 把动态表转换成流
           DataStream<Row> resultStream = tableEnv.toAppendStream(resultTable, Row.class);
           resultStream.print();

           try {
               env.execute();
           } catch (Exception e) {
               e.printStackTrace();
           }



           }
}
